msgid "Please enter a valid decimal number with at most %s total digit."
msgid_plural ""
"Please enter a valid decimal number with at most %s total digits."
msgstr[0] "请输入一个有效的小数，最多 %s 个数字。"
msgstr[1] "请输入一个有效的小数，最多 %s 个数字。"

Please don't delete stuff - it will be overwritten on the next generation. You need to set up the pluralization the right way and fill in the texts the right way. If Singular and Plural are identical, one option would be to put just the same sentence in both msgstr fields that are there for the pluralized message. Or check with the gettext documentation (or some other chinese i18n people) on how to do it right (maybe you just need to add a pluralization header that tells gettext that there is only one form?).